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48 terms

Glencoe Health Chapter 17

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myocardium
special type of muscle that contracts rhythmically and automatically
septum
thick central muscular wall
atrium
upper chamber
ventricle
lower chamber
vena cava
two blood vessels that carry blood that has been depleted of oxygen but contains carbon dioxide and waste matter
plasma
fluid in which the other parts of blood are suspended
hemoglobin
the oxygen-carrying part of blood
platelets
cells that prevent the body's loss of blood
arteries
the vessels that carry blood away from the heart
capillaries
vessels that carry blood between arterioles and small vessels called venules
veins
vessels that return deoxygenated blood toward the heart from the body's organs and tissues
lymphatic system
drains tissue fluid back into the blood stream and fights infection
lymph
clear yellow fluid that fills the spaces around body cells
lymphocytes
white blood cells that protect the body against pathogens
lymph nodes
masses of tissue that filter lymph before it returns to the blood
B cells
produce antibodies that destroy or neutralize invading pathogens
killer T cells
relaese toxins in abnormal body cells that help destroy them
systolic pressure
arterial pressure is at its greatest
diastolic pressure
arterial pressure is at its lowest
congenital
occuring at birth
heart murmur
abnormal sound in heart
varicose veins
swollen or enlarged veins that are caused by veins that are weakened and close up
anemia
concentration of hemoglobin in the blood is below normal levels (iron-lacking)
leukemia
abnormal production of white blood cells in bone marrow
hemophilia
inherited bleeding disorder
hodgkin's disease
cancer of the lymph tissue
tonsillitis
infected tonsils
internal respiration
exchange of gases between the blood and the cells of the body
diaphragm
muscle that seperates the chest and abdominal cavities
bronchi
tubes that lead into and out of each lung carrying oxygen and carbon dioxide
alveoli
exchange of gases in the lung take place here
pharynx
throat
trachea
windpipe
larynx
voice box
bronchitis
inflammation of the bronchi
asthma
inflammatory condition in which the small airways in the lungs become narrowed, causing difficulty in breathing
pneunomia
inflammation of the lungs
pleurisy
inflammation of the membrane lining the lungs and chest cavity
tuberculosis
an infectious, bacterial disease of the lungs, characterized by tubercles or sores in the lung
emphysema
condition in which the alveoli burst and blend to form fewer, larger sacs with less surface area
sinuses
air-filled spaces that are in the nasal cavity that warm and moisten the air
red blood cells
carry oxygen from the lungs to the body tissues where it is exchanged for carbon dioxide
white blood cells
protect the body against infection and to fight infection when it occurs
pathogens
disease-carrying agents
pericardium
bag of tissue surrounding heart
endocardium
inside lining of heart
aorta
to all parts of the body
pulmonary artery and vein
go to alveoli through lungs to transfer carbon dioxide to get oxygen to bring back to heart